The conclusion is supposed to convince the reader that the writer has proved his/her point.
The conclusion is the last section of a piece of writing in which the content, final comments and the purpose of writing is summarized. The conclusion is the section where the writer has the last chance to persuade the reader to his/her point of view. The conclusion usually have a sense of completeness and closure and its content determines the impression of the reader after they have finished reading the book.